Dentsply ProTaper Next Refill 25mm is a dental product that includes a set of files used in root canal treatment. These files are designed to be used with the ProTaper Next system, which is the successor to the ProTaper Universal system. The ProTaper Next system is known for its versatility and flexibility, providing efficient solutions for endodontic practitioners. The off-centered rectangular cross-section of the ProTaper Next files gives them a unique "swaggering" movement as they navigate through the root canal. This design, along with the off-centered cross-section and unique file design, creates an enlarged space for debris removal during the root canal procedure. One of the key features of the ProTaper Next files is the M-Wire NiTi (Nickel Titanium) material used in their construction. The M-Wire material enhances file flexibility while maintaining cutting efficiency. This is achieved through an advanced thermal treatment process developed by Dentsply Sirona, the company behind the ProTaper Next system. The ProTaper Next Refill specifically refers to a package or set of ProTaper Next files, typically with a length of 25mm. These refills are used by dental professionals to replace worn or damaged files in their ProTaper Next system, allowing them to continue performing root canal treatments effectively.